// Copyright 2018 Percona LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dcos

import (
	"os"
	"path/filepath"
)

// FrameworkHost returns the service/framework host/DNS suffix using
// the FRAMEWORK_HOST environment variable that is set automatically
// by DC/OS.
// Added to resolve https://jira.percona.com/browse/PMDCOS-5
func FrameworkHost() string {
	return os.Getenv(EnvFrameworkHost)
}

func MesosSandboxPathOrFallback(path string, fallback string) string {
	mesosSandbox := os.Getenv(EnvMesosSandbox)
	if mesosSandbox != "" {
		if _, err := os.Stat(mesosSandbox); err == nil {
			return filepath.Join(mesosSandbox, path)
		}
	}
	return fallback
}
